Dough-mixing machine.



PATENTED NOV. 6; 1906.

R.HOHNBAOH.

DOUGH MIXING MACHINE.

APPLICATION FILED MAR. 8, 1906.

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DOUGH MIXING MACHINE. Arnwuxou rum: 1mm, 190a.

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KWMLM UNITED STATES PATENT OFFICE.

, ROBERT HOHNBACH, OF JOLIET, ILLINOIS. g

DOUGH-MIXING MACHINE.

Specification of Letters Patent.

Patented Nov. 6, 1906.

Application filed March 8 1906. Serial No- 304:.8'7'7.v

have invented certain new and useful Improvements in Dough-Mixing Machines, of which the followingl' 1s a s ecincation. This lnvention as re atlon to machines for mixing diiferent kinds of dough for bread and cakes, and has for its objects, first, the prov1sion of novel means for imparting to the mixing-tank a rotary motion around an axial center through which passes a shaft carrying suitable mixing-blades or a itators second, the provision of means for ti ting the mixingtank for the urpose of emptying it while it is being axia ly rotated; third, the provision of novel details of structure and arrangement in a dough-mixing machine whereby the efiiv of its limbs D D res ectively, with boxes ciency of the latter is increased and economy, cleanliness, and convenience secured.

The invention consists in the novel construction, combination, and arrangement of parts hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a plan view of a dough-mixing machine embodying my invention. Fig. 2is a vertical central sectional view on the line X X of Fig. 1. Fig. 3 is an end elevation.

i A designates a cylindrical cast-iron mixing-tank arranged and adapted to occupy a vertical axial position, and B B are radiallyarranged mixing-blades attached to an axial shaft C, which is j ournaled at its lower end in a recess a in the bottomof the tank, its upper end being securely fastened to a cast-iron yoke D, which opens the upper end of the tank. This yoke is formed at the lower end or bearings d d, throug which pass the horizontal axially-alined shafts O P, mounted and turning in bearings O P P formed on the verticalstandards E E E bolted to the base-plate M.

.The limb D of the yoke is keyed to and turns with the shaft P, while the limb D turns loosely upon the shaft 0. The shaft 0 is the power-shaft of the machine and has keyed to its outer end the driving-pulley I and to its inner end the beveled pinion G. Between the pinion G and the standard E is located a splined sliding clutch member H, with which engages a clutch-yoke Z, provided with a hand-lever L, pivotally mounted on an arm Z, projecting from the standard E.

The pinion G engages with a toothed annular gear F, having an external horizontal flange N, which is supported .by and turns upon segmental flanges N, formed on the limbs of the yoke'D, the gear F rotating about the axial center of the tank and mixing-shaft. K

The tank is provided with diametricallyalined arms a a, slotted at their ends to receive studs 0. a on the upper edge of the annules F, so that the tank will revolve with the latter, rotary motion of the same being produced through the medium of the shaft 0, clutch H, and pinion G.

The yoke-limb D is provided at its lower end below the shaft P with a plate K, having a segmental slot 7c, through which latter passes a threaded pin k projecting from the standard E. A nut J, having an operatinghandle j, is screwed onto the pin and by tightening up the nut the yoke is secured in any position to which it may be moved upon the shafts O P. When the yoke is thus secured in an upright position, the tank will be constantly rotated in a vertical position but upon releasing the .nut the thrust of the gears G F will overcome the weight of the tankyoke and attached parts, and these will be tilted, while at the same time the tank is kept rotating, the tilting being arrested as soon as the end of the segmental slot 7c comes in contact with the pin 76.

The center 'of gravity of the parts A, B, C,

D, and F is near the bottom of the tank, just sufiiciently low to hold these parts in a vertical position when the clutch H is disengaged from the gear G, but not suflicient when the clutch engages with the gear and the nut j is loosened to prevent the parts from being tilted. The clutch serves as a means for disen 'a in the ears from the oWer-shaft' at.

2: g g g P any time that it is desired to arrest the rotation of the tank without stopping the power.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a mixing-machine, the combination with the supporting-frame, of a rotatable mixing-tank having its axes vertical, a driving-shaft and means for rotating the tank around an axial center and tilting it through the rotation of the shaft and while the tank is rotating. I

2. In-a mixing-machine, the combination of the supporting-frame, the mixing-tank and power-shaft, of means including said power-shaft for imparting to the tank a rotary axial motion and automatically tilting and adapted to turn or tilt on the axis of" said it While it is rotating and of means for adshaft means for securin the yoke in different justing and maintaining it in different posipositions, a mixing-tan and a gear attached tions during such motion. to and surrounding the latter and engaging 15 5 3. In a mixing-machine, the combination said pinion.

With an axially-rotatable mixing-tank, of In testimony whereof I aflix my signature means for simultaneously rotating and autoin the presence of two witnesses.

matically tilting the same. ROBERT HOHNBACH.

4. In a miXin -machine, the combination Witnesses: 10 with a horizonta power-shaft and a toothed JAMES WALTER MARTIN,

pinion carried thereon, of a yoke mounted STEPHEN A. GOODSPEED. 

